JEWELLERY, FINE & APPLIED ART AUCTION Tuesday, 16 August 2022 - 10:00 AM start

A 9½" radius ebony octant by Cox, London,

Estimate: $600 - $1,000

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Absentee bidding for this lot closes Tuesday, 16 August 9:00 AM (NZST)

Lot Details

marked on ivory plaque on the crossbar; with ivory scale divided -3º to 107º; brass index arm; ivory vernier scale divided 0º-20 º; brass thumbscrew lock to back and screw adjuster to front; 3" telescope; brass mirror; four shades (blue, red, amber, green); horizon glass adjustment by lever and adjuster screw. c.1820.